Door lock



NOV. 21, 1939. w SCHLAGE 2,180,371

DOOR LOCK Filed June 18, 193': 2 sneet -sheet l INV NTOR.

ATTORNEX Nov. 21, 1939. w. R. SCHLAGE DOOR LOCK Filed June 18, 1937 2Sheets-Sheet 2 M 5&7

ATTORNEX Patented Nov. 21, 1939 PATENT OFFICE DOOR LOCK Walter R.'Schlage, San Francisco, Calil.'., assignor to Schlage Lock Company, SanFrancisco, (la-11L, a corporation of California Application June 18,1937, Serial No. 148,934

21 Claims. (Cl. 70-146) This invention relates to door locks of the typeemploying two independently operable spindles, and especially to meansfor dogging one of the spindles under certain operating conditions.

The object of the present invention is to generally improve and simplifythe construction and operation of locks of the character described; toprovide a lock having an inner and an outer spindle operableindependently of each other with a pushbutton in the inner spindle and akey mechanism in the outer spindle; to connect the push button and thekey mechanism with a. bar towhich longitudinal movement is imparted bythe push button and rotary movement by the key mechanism; and further toprovide a dogging mechanism which is actuated by the bar through themedium of the push button or the key, where'- by the bar may be doggedagainst movement under certain conditions or the outer spindle doggedagainst rotation, or whereby both may be simultaneously dogged.

The invention is shown by way of illustration in the accompanyingdrawings, in which Fig. 1 is a horizontal section of the lock, showingit mounted in a door;-

Fig. 2 is a vertical section taken on line II-II of Fig. 1;

Figs. 3 and 4 are perspective views of the rollback portions of therespective spindles;

Fig. .5 is a longitudinal section showing the spindles telescoped;

Fig. 6 is a perspective view of the retractor plate and the latch bolt;

Fig. 7 is a perspective view of the dog, together with the dogging lugscarried thereby;

Fig. 8 is a perspective view of a standard form of cylinder lock;

Fig. 9 is a perspective view of the bar;

Fig. 10 is a perspective view of the lock housing;

Fig. 11 is a perspective view of the retractor plate and the spindlesextending therethrough, said view showing the manner in which thedogging lugs engage and dog the outer spindle.

Referring to the drawings in detail, and particularly to Figs. 1 to 6,inclusive, A and B indicate the opposite faces of the stile of a hollowmetal door, and C the front edge thereof. Formed in the faces A and Bare openings which are provided for the reception of spindle bearings,as

6 which are connected by front and rear end plates 1 and 8 and sideplates 9 and I in which are formed screw-threaded openings.

The housing is inserted in the door through the opening formed in thefront edge C, and when inserted is secured by a pair of spindle bearingsII and I2 which are inserted through the openings formed in the oppositefaces A and B of the stile. The spindle bearings are provided withthreaded inner ends Ila and Ho which are screwed into the threadedopenings formed in the side plates 9 and In of the housing and thussecures and supports the rear end of the housing with relation to theside wall, while the front end will be secured and supported in theopening through which it is inserted.

Slidably mounted for longitudinal movement within the housing is aretractor plate I3. This plate is guided at the inner end by lugs l4extending into slots ll5 formed in the top and bottom plates 5 and 6,while the front end is guided by a latch bolt it which is secured to theretractor plate and normally extends through an opening 1a formed in thefront plate. On the rear end of the retractor plate is a cross bar l1and formed in the front thereof is an opening l8 through which extend apair of telescoping spindles I 9 and 20 which are supported andjournaled in the spindle bearings H and 12. Each spindle is providedwith a knob, indicated at Ma and 20a,

respectively, so that each spindle may be independently rotated; andeach spindle is provided with a transverse slot to form rollbacksections 2| and 22 which engage the front face of the cross bar l'l andimpart reciprocal movement thereto when either spindle is rotated, and,as the cross bar is secured to, or forms a part of, the retractor plate,said plate together with the latch bolt will also be reclprocated.

Formed in the front face of the cross bar I! is a recess 23, and formedrearwardly therein and extending through the cross bar is a passage inwhich is mounted a dogging member 24, said dogging member being providedwith a pair of dogging lugs 25 and also with a pin 26 which serves as asupport and guide for a spring 21 interposed between the dog 24, and therear plate 8 of the housing. The cross bar I! is provided with a pair ofpins 28 which serve as supports and guides for a pair of springs 29which are interposed between the cross plate and the rear plate 8 of thehousing. The springs 29 normally function to maintain the retractor, thecross bar, and the latch bolt, in the extended position shown in Fig. 2,but they yield when either spindle is rotated so as to permit retractionof the latch bolt when the door is to be opened. The spring 21 also aidsthe springs 29 in their function, but in addition thereto actuates thedogging member 24, that is, it tends to maintain the dogging memberwithin the passage formed in the cross bar for its reception, the inwardmovement of the dogging member in this passage being limited by thedogging lugs 25, which enter recesses 25a. formed in the rear face ofthe cross bar 11.

Extending through the spindles is a bar 30. Secured on the inner end ofthe bar is a push button 3|. Secured within the spindle I9 is a washer32 which is slotted to permit the bar 30 to pass therethrough, andinterposed between the washer and the push button is a spring 33 whichnormally serves to maintain the push button in the extended positionshown in Fig. 1, the distance to which the push button is extended beinglimited by a pin 34 securing the bar and engaging the washer 32. The barhas two movements, a longitudinal movement and also a 'rotary movement.It is accordingly essential that the washer 32 be free to rotate, but itmust be secured against endwise movement within the spindle l5, and forthis reason it is secured between lugs pressed inwardly from the innersurface of the spindle.

In the outer end of the outer spindle I6 is mounted and suitably secureda standard form of key-actuated cylinder lock, the housing of which isindicated at 35. The housing contains the usual form of cylinder whichis provided for the reception of a key, and when the key is inserted thetumblers will be retracted and the cylinder may be rotated by means ofthe key. The cylinder extends a short distance beyond the inner end ofthe housing, as indicated at 36 in Fig. 1. This extension is in thepresent instance surrounded by a sleeve 31 which is pinned as shown at38, or otherwise secured thereto, so as to rotate in unison with thecylinder when this is rotated by means of the key. The sleeve has a slotformed therein as shown at 39, and this slot receives and supports theouter end of the bar 30. Furthermore, the slot is of such a length thatwhen longitudinal movement is imparted to the bar by means of the pushbutton, as will hereinafter be described, such movement will beaccommodated.

From the foregoing, it should be obvious that longitudinal movement istransmitted to the bar by means of the push button 3| and that rotarymovement is transmitted to the bar by means of the key mechanism. Thesemovements are depended upon to actuate the dogging member 24, which hastwo functions: first, that of dogging the outer spindle againstrotation; and second, that of dogging the bar against longitudinalmovement. The results obtained can best 'be stated by describing theoperation of the lock.

Referring to Fig. 1, it may be stated that the mechanism is shown innormal position, that is. the latch bolt I6 may be retracted by rotationof either knob. If a person is inside of a room and wishes to lock thedoor, or in other words render the outer knob inoperative, he or shewill merely push the button 3| inwardly. In doingso, a notch 30a, formedin the bar, moves into alignment with the dogging member 24, and when itmoves into alignment therewith, the dogging member can move inwardly adistance equal to the depth of the notch 30a. When the dog movesinwardly that distance, the dogg lugs 25 will enter laterally extendingslots 201) formed in the .outer spindle, and will thus dog the outerspindle against rotation. In this position, no one can enter the roomfrom the outside except an authorized individual with the proper key, asinsertion of a key and rotation of the bar by means of the key a halfrevolution will force the dog outwardly and thereby lift the lugs 25 outof engagement with the slots 20b in the outer spindie. In that instance,the door may be opened from the outside by rotation of the outer knob,as the outer spindle has been released.

It is also possible for the person on the inside of the room to open thedoor whenever desired after the push button has been depressed, as mererotation of the inner knob causes rotation of the inner spindle, whichis always free to rotate. Such rotation causes the rollback portion 2|of the inner spindle to engage the face of the cross bar I! and whensuch engagement takes place, an inward reciprocal movement istransmitted to the cross bar, the retractor plate and the latch bolt,and as the dog 24 is carried by the cross bar, it will move with thecross bar out of the notch 30a, thus releasing the bar 30 and permittingthe spring 33 to return it to the normal extended position shown inFig. 1. Thus under normal conditions rotation of the inner knob andspindle does not only permit retraction of the latch bolt, but it alsoautomatically undogs the outer spindle, and at the same time permits theautomatic return of the bar 30 to normal position. The dog may also beundogged by depression of the latch bolt, the bar being at the same timereleased and restored to normal extended position.

It is alsopossible to dog the outer spindle and knob against rotation,when leaving the room; that is, to lock the door from the outside. Thisis accomplished by merely inserting the key and rotating the bar a halfrevolution. In doing so. a second notch 30b is moved into alignment withthe dog 2!, and the dog is thus forced inwardly by the spring 21 and thelugs 25 carried thereby will enter the notches 20b and thereby dog theouter spindle against rotation. It should also be noted that the baritself is dogged against longitudinal movement in this position, as itcannot be pushed inwardly by means of the push button 3|. In fact, thisfeature is an advantage, as it serves as a means for determining whetherthe door has been locked from the outside or not, when leaving the room.That is, it is not necessary to open the door and then step outside tolock it from the outside. It may just as readily be locked beforeleavingthe room; for instance, when a person desires to 'go out, he or she willopen the door, insert the key, and rotate the bar a half revolution. Todecide whether the door has been locked from the outside, he or she willattempt to depress the push button 3|, but if it cannot be depressed,the person will know that the door has been locked from the outside andhe or she may then merely step out and slam the door, and the doorcannot again be opened from the outside until the proper key has beeninserted, and the bar rotated to the normal position shown in Fig. 1. Ifa person should happen to be locked in the room by a person inserting akey from the outside and locking the door, such person will be able toget out, as the inner knob and spindle are always free for rotation toretract the latch bolt; but if such person leaves the room and shuts thedoor, the door will remain locked from the outside and cannot be enteredexcept by a person having the proper key.

Having thus more or less specifically described the various features ofthis invention, I wish it understood that changes may be resorted towithin the scope of the appended claims, and that the materials andfinish of the several parts employed may be such as the desire orexperience of the manufacturer may dictate.

Having thus described my invention, what I claim and desire to secure byLetters Patent is- 1. In a door lock having an inner and an outerindependently operated spindle, a bar within the spindles, means forrotating the bar and for imparting longitudinal movement thereto, aspring actuated dog controlled by longitudinal movement of the bar fordogging the outer spindle against rotation, said dog leaving the innerspindle free to rotate, and means controlled by rotation of the bar forundogging the dog.

2. In a door lock, inner and outer independently operable spindles, abar within the spindles,

a dog operable by the bar to dog or undog the outer spindle, said dogleaving the inner spindle free to rotate, means in the inner spindle forimparting-longitudinal movement to the bar, and means in the outerspindle for rotatingthe bar, and a spring actuated dog controlled by thebar to simultaneously dog the bar against longitudinal movement and theouter spindle against rotation 3. In a door lock, an inner and an outerspindle, a bar within the spindles, a push button on the bar andnormally projecting beyond the inner end of the inner spindle, a springmaintaining the bar and button in the projected position, said buttonadapted to impart longitudinal movement to the bar to cause the buttonto assume a depressed position, means in the outer spindle for rotatingthe bar, and a spring actuated dog controlled by the bar to dog thebutton and bar in depressed position and the outer spindle againstrotation, said dog being undogged to release the button, the bar and theouter spindle upon rotation of the bar.

4. In a door lock having inner and outer independently operablespindles, a bar within the spindles, apush button on the bar andnormally projecting beyond the inner end of the inner spindle, a springmaintaining the bar and button in a projected position, said buttonadapted to impart longitudinal movement to the bar to cause the buttonto assume a depressed position, means in the outer spindle for rotatingthe bar, and a spring actuated dog controlled by the bar, said bar beingselectively operable to assume different positions and in one positionpermitting the dog to dog the outer spindle against rotation and the baragainst longitudinal movement so as to preventdepression of the button,and in anotherposition adapted to simultaneously undog the outer spindleand the bar and button.

5. In a door lock having inner and outer independently operablespindles, a bar within the spindles, a dog operable by the bar to dog orundog the outer spindle, said dog leaving the inner spindle free torotate, a spring actuated dog controlled thereby,means in the innerspindle for imparting longitudinal movement to the bar, said movementpermitting the dog to dog the outer spindle against rotation, and keyactuated means in the outer spindle for rotating the bar, said rotationof the bar causing undogging of the outer spindle.

6. In a door lock, a housing, an inner and an outer spindle entering thehousing from opposite sides, a retractor plate slidably mounted in thehousing, a cross-bar on the inner end of the retractor plate entering atransverse slot formed in the outer spindle, a dog mounted in thecrossbar and slidable therein, a pair of dogging lugs on the dog, saidouter spindle having recessess formed therein for the reception of saidlugs, a spring engaging the dog to normally maintain the dogging lugs inthe recesses of the spindle, a bar within the spindles and movable intoor out of engagement with the dog to move it to a position where thelugs will either clear or enter the recesses, and means for actuatingthe bar to control the position of the dog and its cooperating lugs.

7. In a door look, a housing, an inner and an outer spindle entering thehousing from opposite sides, a retractor plate slidably mounted in thehousing, a cross-bar on the inner end of the retractor plate entering atransverse slot formed in the outer spindle, a dog mounted in thecrossbar and slidable therein, a pair of dogging lugs on the dog, saidouter spindle having recesses formed therein for the reception of saidlugs, a spring engaging the dog to normally maintain the dogging lugs inthe recesses of the spindle, a bar within the spindles and movable intoor out of engagement with the dog to move it to a position where thelugs will either clear or enter the recesses, and button controlledmeans in the inner spindle for actuating the bar to' control theposition of the dog and its cooperating lugs.

8. In a door look, a housing, an inner and an outer spindle entering thehousing from opposite sides, a retractor plate slidably mounted in thehousing, a cross-bar on the inner end of the re.- tractor plate enteringa transverse slot formed in the outer spindle, a dog mounted in thecrossbar and slidable therein, a pair of dogging lugs on the dog, saidouter spindle having recesses formed therein for the reception of saidlugs, a spring engaging the dog to normally maintain the dogging lugs inthe recesses of the spindle, a bar within the spindles and movable intoor out of engagement with the dog to move it to a position where thelugs will either clear or enter the recesses, and key controlled meansin the outer spindle actuating the bar to control the position of thedog and its cooperating lugs,

9. In a door dock, a housing, an inner and an outer spindle entering thehousing from opposite sides, a retractor plate slidably mounted in thehousing, a cross-bar on the inner end of the retractor plate entering atransverse slot formed in the outer spindle, a dog mounted in thecrossbar and slidable therein, a pair of dogging lugs on the dog, saidouter spindle having recesses formed therein for the reception of saidlugs, a spring engaging the dog to normally maintain the dogging lugs inthe recesses of the spindle, a bar within the spindles and movable intoor out of engagement with the dog to move it to a position where thelugs will either clear or enter the recesses, button controlled means inthe inner spindle to actuate the bar, and key actuated means in theouter spindle to actuate the bar, said key actuated means together withthe dog being also adapted to render the button controlled meansinoperative.

10. In a lock having a rotatable outer and inner knob, a longitudinallymovable bar within the inner knob, and a dog controlled by said bar forrendering the outer knob inoperative, said dog also adapted to dog thebar against longitudinal movement.

11. In a lock having a rotatable outer and inner knob, a depressible barwithin the spindles, a dog controlled by the bar to dog or undog theouter knob, and key operated means in the outer knob cooperating withthe dog for moving the bar to a position where it will be dogged by thedog and held against depression.

12. In a lock having independently rotatable outer and inner spindles, alongitudinally movable bar within the inner spindle, a dog controlled bythe bar for rendering the outer spindle inoperative, and means wherebyrotation of the bar will restore the outer spindle to operation.

13. In a look, a latchbolt, a rotatable outer and inner knob foractuating the latchbolt, a depressible bar in the inner knob, a dogcontrolled by said bar for rendering the outer knob inoperative, butleaving the inner knob free to actuate the latchbolt, a key mechanism inthe outer knob, and a connection between the key mechanism and bar,whereby the bar is rotated, said rotation of the bar selectivelycontrolling either dogging or undogging of the outer knob.

14. In a lock, a latchbolt, a retractor slide connected with thelatchbolt and mounted for reciprocal movement, spindle dogging meanscarried by the retractor slide, outer and inner independently operablespindles to actuate the retractor, a bar within the inner spindle, andmeans whereby inward movement of the bar will control the spindledogging means to render the outer knob inoperative.

15. In a lock, a latchbolt, a retractor slide connected with thelatchbolt and mounted for reciprocal movement, spindle dogging meanscarried by the retractor slide, a spindle to actuate the retractorslide, and longitudinally movable means within the spindle controllingthe dogging means to selectively engage or disengage the spindle.

16. In a look, a latchbolt, a retractor mounted for reciprocal movementto retract the latchbolt, a spindle dogging latch carried by theretractor, an outer and inner spindle to actuate the retractor, a springactuated depressible bar within the inner spindle, means for securingthe bar in its depressed position, means on the bar whereby depressionof the bar will control the spindle dogging latch and dog the outerspindle against rotation, and means whereby inward movement of theretractor will automatically release the bar and permit its spring torestore it to normal outward position.

1'7. In a look, a latchbolt, a retractor slide connected with thelatchbolt and mounted for reciprocal movement, a spindle dogging membercarried by the retractor slide, outer and inner independently operablespindles adapted to actuate the retractor slide, a push button in theinner spindle, and means whereby depression of the push button willcontrol the dogging member on the retractor to render the outer spindleinoperative.

18. In a look, a latchbolt, a retractor slide connected with thelatchbolt and mounted for reciprocal movement, a spindle dogging membercarried by the retractor slide, an outer and inner spindle adapted toactuate the retractor slide, a push button in the inner spindle, meanswhereby depression of the push button will control the dogging member onthe retractor slide and thereby render the outer spindle inoperative,and means whereby inward movement of the retractor slide will controlthe dogging member to restore the outer spindle to operation.

19. In a lock, a latchbolt, an outer and inner actuator to independentlyoperate the latchbolt, a bar within the inner actuator, a dog controlledby the bar to dog or undog the outer actuator, said dog leaving theinner actuator free to rotate, and said dog being controlled bylongitudinal movement of the bar to dog the outer actuator againstoperation, and key actuated means in the outer actuator to rotate thebar, said rotation of the bar causing undogging of the outer actuator.

20. In a door lock having inner and outer independently operatedspindles, a bar within the spindles, a dog movable by spring action intodogging engagement with the outer spindle to render it inoperative, andmeans in the outer spindle for rotating the bar in one direction oranother, said bar when rotated in one direction engaging the dog andforcing it out of dogging engagement and when rotated in the otherdirection moving out of engagement with the dog and permitting the dogto move into dogging engagement with the outer spindle.

21. In a look, a latchbolt, a retractor, a retractor slide connectedwith the latchbolt and mounted for reciprocal movement, an inner andouter spindle mounted for independent rotatable movement and adapted toactuate the retractor slide, a dogging latch carried by the retractorand engageable with the outer spindle to dog the same, and alongitudinally movable bar in the inner spindle controlling the dogginglatch either to dog or undog the outer spindle.

WALTER R. SCI-ILAGE.

